OEM Subwoofer, Flux Capacitor

Has anyone torn apart the subwoofer on the extended cabs?
What size speakers are in there? Can I put different ones in there?
I haven't found any pics of a tear-down. Anybody have pics?

 

I believe is just a 6 inch round crappy ass speaker

 

No one has torn this thing apart, huh?

 

No one has taken this thing apart yet?
I'd like to put in a better speaker, if I knew what I was up against.

 

Its a 8" and real ez to remove i wanted to change mine but reading on here they say its a waste of time.

 

The Crossover box on the Flux Capacitor

The Subthump.com 2010 Access Cab subwoofer box. 8 or 10 inch subwoofers supported.

Flux Capacitor with the cover off.

Passenger access door with plastic cover over unused speaker mount.

5 and a 1/2 inch subwoofer from the Flux Capacitor.

I put in a Sound Ordnance 500 watt sub amp under the passenger seat. The seat's metal bar rubs on it though, even after putting 2 washers under the seat mount bolts. Its hooked up to my Pioneer AVH-P3300BT receiver with an attached HD radio tuner, Axxess steering wheel control, and parking brake overide. I still have the shitty exciters hooked up in the ceiling. They will be replaced someday with rear door speakers.